[3.1.0] Fixed bug with fallback languages in LanguageFactory

- Also, reverted bogus Generator changes

git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@1723 48356398-32a2-884e-a903-53898d9a118a

library/HTMLPurifier/Language.php

@@ -27,6 +27,13 @@ class HTMLPurifier_Language
      */
     public $errorNames = array();
     
+    /**
+     * True if no message file was found for this language, so English
+     * is being used instead. Check this if you'd like to notify the
+     * user that they've used a non-supported language.
+     */
+    public $error = false;
+    
     /**
      * Has the language object been loaded yet?
      * @todo Make it private, fix usage in HTMLPurifier_LanguageTest